ball and sag mill foundation design

The Siemens 42ft gearless mill drive, still an …

next size Gearless Mill Drive, i.e. a 42ft mill. It is a dual design approach considering, on the one hand, the experi-ences Siemens made with Gearless Mill Drive (GMD) instal-lations over the past 40 years and, on the other hand, using computerized design tools calculating the system behavior where experience does not yet exist.

SAG Mill | Autogenous and Semi-Autogenous Mills

When future tonnage is to be increased, the SAG Mill can feed downstream ball milling to boost capacity. Fuller-Traylor SAG/AG Mills range in size from 4.3m through 12.2m in diameter with powers as high as 28,000 kW. Our team of product engineers continually improves SAG/AG Mill designs in order to provide the most robust, safe, and efficient ...

SAGDesignTM – Using Open Technology for Mill Design …

The methods used to design SAG mills and SAG grinding circuits have been significantly upgraded in the last eight years. Direct measurements of SAG mill and ball mill pinion energy requirements are now available as test results from SAGDesign testing (patented technology). This fact puts the

A CRITICAL REVIEW OF GRINDING DESIGN …

There are four main aspects of SAG mill design that will be discussed in this paper. The first and most important is the samples that are taken upon which the design …

Background

Although the foundation of the test was based on his practical engineering experience, it was in collaboration with Dawson Metallurgical Laboratories and Outotec that the SAGDesign test was developed. The test consists of a robust laboratory SAG test followed by a Bond Ball Mill Work Index test on SAG ground ore (referred to as S d-BWI).

ball mill design concrete foundation

Manual design of SAG/ball/rod mill foundations ... · RE: Manual design of SAG/ball/rod mill foundations youngstructural (Structural) 7 Mar 07 18:27 I have a bit of a long answer here, so I'll give you a synopsis: I don't think an design can be produced manually, and I think a preliminary design could …

Grinding Ball Design

Ball Design Factors Size and Mass. Importance of size: Taggart (1927) stated "Size of balls should be proportional to the work to be done, i.e. the size of the particle that must be broken by impact, hence coarse feed and hard ores require larger balls than finer feeds and softer ores." The 9 to 10 m (30 to 33 ft) SAG mills now in wide use ...

sbmchina/sbm foundation design for ball mills.md at main …

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SAG Mill Ball Size Evaluator | Evaluation Factors

Lets calculate/select/pick a new ball for your SAG mill. Now, lets suppose you have a SAG Mill and Ball Mill that are not drawing full kW Power. The SAG Mill has a "small" circulation load of oversize given be …

sag mill foundation design criteria

SAG Mill Success—Start with the Basics – WOMP – World of …. SAG Mill Success —Start with the … for overall design of the motor, mill and foundation to any one specific entity, they do offer specific guidelines for … » More detailed Choosing a SAG Mill to Achieve Design Performance. Key Words: SAG mill, design, optimum conditions, …

The Selection Design and Application of Mill Liners for …

> Liner design has a significant effect on mill performance and liner life > Engineering approaches have highlighted mill performance with mill modelling and the use of improved materials > Liner design,with the advent of large diameter SAG mills, the issues of design, selection, monitoring and evaluation of mill performance is critical

Ball Mill vs SAG Mill: What's the Difference?

detailed design; project construction; As a general rule, SAG mills tend to be more expensive to acquire and maintain than ball mills, however, the cost-benefit analysis must consider the total cost of operation over the life of the mill. ... Further research into the specifics of a ball mill and a SAG mill is required for a plant to decide ...

Ball Mill & Rod Mill Design

Grinding (Rod) or (Ball) Mill TYPE D Has single weld, triple flanged, construction which means the shell is furnished in two sections, flanged and bolted in the center. All flanges are double welded as well as steel head to shell, note design. Tumbling Mill (Rod or Ball) Mill TYPE E Has quadruple flanged construction. This also furnishes …

ball mill foundation design calculation sample.md

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HOW TO ENSURE SEISMIC REQUIREMENTS FOR SAG …

Generally the foundation design requires more effort than the seismic design of the GMD, simply due to the fact that the motor structure is made of steel.

Semi-autogenous grinding (SAG) mill liner design

With this high aspect ratio, SAG mills generate both thrown and cascading ball-milling actions with shell linings shaped to lift and to throw alloy steel grinding balls of up to 150 …

Manual design of SAG/ball/rod mill foundations

As an engineer who has experience using FEM for the design and assessment of SAG and ball mill foundations, I know that this approach can be time …

RoM BALL MILLS

RoM Ball mills, like SAG mills, utilise coarse rocks in the RoM feed as grinding media but with 25 – 40% steel balls added, which is advantageous when the coarse fraction in the RoM feed is ...

AG – Autogenous & SAG Semi-Autogenous Mill Design Calculations

Ore Testing for AG & SAG Grinding Mill Design. ... Current operational results show that the SAG mill is operating at 5% ball charge level by volume and is delivering a K80 800 micron product as predicted. Power drawn at the pinion is 448 kW, 13.617 kWh/tonne (SAG mill) and 570 kW, 17.325 kWh/tonne (ball mill) when …

SAG Mill Grinding Circuit Design

Hydrostatic Trunnion Bearing Design

The Sydvaranger SAG mill. Originally, the mill was supported by five shoes on each side: one at the bottom 6 o'clock position and two on either sides of it. The stability of the bearing was questionable and as in the case of Chuquicamata, the mill was escaping sideways from its bearings. The St. Lawrence Cement mill

Understanding the SAG Mill in Copper Ore Mining Process

In fact, there have been recent advancements in technology that allow manufacturers to design larger capacity ball mills with improved energy efficiency. ... Tower Mills were developed to overcome some of the limitations of both ball mills and SAG mills. They can handle finer feeds than ball mills and have higher energy efficiency thanks to ...

II-100 II-101 INTRODUCTION

hemisphere. It employs the world's largest SAG mill, 40 ft diameter and two 22 ft ball mills in the grinding circuit. In that project, the owners considered it necessary to assess the dynamic response of the foundations for the SAG and ball mills due to vibration problems experienced in other installations. Numerical models of the foundations

Ball Mill Maintenance & Installation Procedure

With this design, in the event of some movement, the mill and foundation will tend to move as a unit. ANY SLIGHT SETTLING OF FOUNDATIONS WILL CAUSE BEARING AND GEAR …

SAG Conference Award Foundation

SAG Conference Award Foundation | 1,339 followers on LinkedIn. ... Christina chaired the Ball Mill Comminution Circuit Design session, exploring the options to make mining more efficient while ...

SAG Mill Components

If the mill is to feature reversible rotation (as many autogenous mills do) it is vitally important that the trunnion bearings be fully self-aligning, so that "hot spots", due to a cocked bearing that does not perfectly align itself with the trunnion, do not become a …

SAG vs. AG Mills: Understanding the Key Differences

SAG mills are often used in conjunction with a ball mill or pebble mill to achieve the desired grind size. SAG mills are primarily used in the mining industry, particularly in the processing of gold, copper, and platinum group metals. ... When it comes to design and components, SAG mills have larger diameter and length ratios, and are typically ...

Ball Mill and SAG Mill Shell Liner Design

Granular Dynamics, International LLC (GDI) are experts in AG, SAG, and Ball Mill liner designs. We can typically enhance the design of mill liners to increase life, through-put, and lower KW-Hrs/Ton.

Design SAG mill production when you need it most: In …

Learn how to design and operate SAG mills that achieve design tonnage from day 1 and year 1, using power based methods and ore hardness measurements. This paper …

Operation Analysis of a SAG Mill under Different …

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Impact on Grinding Mill Design of Recent New Discoveries

includes a Bond Ball Mill Work Index test on SAG ground ore from the first stage of the test. The ratio of SAG pinion energy to Bond BM Wi is a key parameter in a SAG mill grinding circuit design, because this ratio controls the power split between SAG and ball mills at the target T80 transfer size( ). INTRODUCTION

The Selection and Design of Mill Liners

Selection and Design of Mill Liners. In Advances in Comminution, Ed. S.K. Kawatra. ISBN-13: 978- ... Was generally used for mill liners (AG, SAG and Ball) prior to the movement to higher carbon content steels. It has excellent wear characteristics with some impact resistance, generally now used for discharge grates where ...

SAGDesign Test

The SAG mill pinion energy, W SDT (kWh/t) and SAG discharge Bond ball mill work index, S d-BWI (kWh/t), are then used to calculate the total energy to grind the ore from 80% passing 152 mm to 80% passing the client specified final product size P 80.This information, along with the ore specific gravity, is used to calculate necessary mill sizes …

QdX4 Mill Drive system

SAG mill 36 ft. dual drive SAG mill 40 ft. QdX4TM Mill Drive Foundation deformation CMD test bench Condition monitoring Foundation Standard design • Standard gear driven foundation loading. • Seismic loading easily calculated. • No static or dynamic modal analysis required. • No brake pier required.

What's the Difference Between SAG Mill and Ball Mill

Difference Between SAG Mill and Ball Mill, from the working principle, application, structure, etc. Grind and blend solid or hard materials into smaller pieces by means of shear, impact and compression. ... The slow-speed transmission device can realize the point-to-point reverse in the electronic control design. When connecting the …